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Study of photoelectric observations of the eclipsing binary system FZ-Delphinus

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Abstract

Photoelectric observations in B and V for the FZ Del system are presented and its light curves are analyzed. Absolute parameters are obtained. The system shows a near contact subgaint secondary component with a likely K1 spectral type. The O-C curve is presented and probably a secular orbital period variations is detected on a timescale of about 6.9×106 yrs, suggesting thermal timescale mass transfer. A new light elements for the system have been obtained. The system can be considered as an early stage of conservative case of mass transfer.

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Authors and Affiliations

  1. National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt

    M.A. Hanna & N.S. Awadalla

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  1. M.A. Hanna
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  2. N.S. Awadalla
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Hanna, M., Awadalla, N. Study of photoelectric observations of the eclipsing binary system FZ-Delphinus. Astrophysics and Space Science 291, 85–96 (2004). https://doi.org/10.1023/B:ASTR.0000029995.26851.00

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  • DOI: https://doi.org/10.1023/B:ASTR.0000029995.26851.00

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